CN220128102U

CN220128102U - Perforating device is used in aluminium alloy processing

Info

Publication number: CN220128102U
Application number: CN202320589413.2U
Authority: CN
Inventors: 毛新友; 柳云; 周小华; 苏传学
Original assignee: Guangdong Jinghao Aluminum Co ltd
Current assignee: Guangdong Jinghao Aluminum Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-12-05
Anticipated expiration: 2033-03-23

Abstract

The utility model relates to the technical field of processing and punching, in particular to a punching device for processing an aluminum profile. The aluminum profile punching device comprises a working plate, wherein supporting legs are fixedly connected to four corners of the lower surface of the working plate, punching columns are arranged right above the working plate, holes for sliding descending blocks are formed in the punching columns, a hydraulic cylinder is arranged on the wall of each Kong Caoding, a telescopic rod of each hydraulic cylinder is fixedly connected with the center of the upper surface of each descending block, a miniature punching machine is arranged on the lower surface of each descending block, a first moving groove is formed in the side wall of each punching column, a polishing column is arranged right below the working plate, grooves for installing the telescopic columns are formed in the inner walls of the polishing columns, lifting blocks are connected in the grooves in a sliding mode, the lower surfaces of the lifting blocks are fixedly connected with the telescopic rods of the telescopic columns, the problem that a plurality of uneven burrs are left around when punching is carried out on aluminum profiles is solved, the use conditions of the aluminum profiles are seriously affected by the burrs, and workers are required to perform deburring treatment on holes in the aluminum profiles again.

Description

Perforating device is used in aluminium alloy processing

Technical Field

The utility model relates to the technical field of processing and punching, in particular to a punching device for processing an aluminum profile.

Background

Industrial aluminum profile aliases: the industrial aluminum extrusion material and the industrial aluminum alloy section are alloy materials taking aluminum as a main component, aluminum bars are extruded through hot melting to obtain aluminum materials with different section shapes, but the proportion of added alloy is different, the mechanical properties and the application fields of the produced industrial aluminum section are different, and the industrial aluminum section generally refers to all aluminum sections except aluminum sections for building doors and windows, curtain walls, indoor and outdoor decoration and building structures.

In the prior art, when punching an aluminum profile, because most of the aluminum profile is of a hollow structure, if a through hole is formed in the surface of the aluminum profile, a drill bit can always penetrate through the whole aluminum profile, but the punching mode can easily leave more uneven burrs around the punching of the aluminum profile, the burrs can seriously affect the service condition of the aluminum profile, workers are required to perform deburring on the holes in the aluminum profile again, the processing efficiency of the aluminum profile is delayed, and the normal use of the aluminum profile is affected.

The prior art scheme of contrast publication number CN217095240U, it includes the platform and is located the fixed support body in platform top to and the stamping device of support body top installation, the top of platform is fixed with two locating plates, and the inside of locating plate is provided with the running roller, is connected with the aluminium alloy body between two locating plates, and punching a hole has been seted up to the bottom of platform, two inside grooves have been seted up at the top of platform, and the inside of two inside grooves is provided with adjusting part, and adjusting part's top is fixed with two movable plates, is provided with clamping assembly on the movable plate. This location perforating device is used in aluminium alloy processing, cooperation between structure on through clamping assembly and the locating plate can be convenient for the staff carry out the centre gripping location to the aluminium alloy body to under adjusting assembly's effect, can be under the state of processing automatically regulated position of punching, consequently improved staff's security and the efficiency of processing.

Above-mentioned scheme can be through the cooperation between structure on clamping assembly and the locating plate, can be convenient for the staff carry out the centre gripping location to aluminium alloy body to under adjusting assembly's effect, can be under the state automatically regulated position of punching of processing, consequently improved staff's security and the efficiency of processing, but it is in punching the processing procedure to aluminium alloy and does not solve the hole in the condition that contains more burrs, fails to solve the problem among the above-mentioned background art.

Disclosure of Invention

The utility model aims to provide a punching device for processing aluminum profiles, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the utility model provides a punching device for processing aluminum profiles, which comprises a working plate, wherein supporting legs are fixedly connected to four corners of the lower surface of the working plate, a punching column is arranged right above the working plate, a hole groove for sliding a descending block is formed in the punching column, a hydraulic cylinder is mounted on the wall of Kong Caoding, a telescopic rod of the hydraulic cylinder is fixedly connected with the center of the upper surface of the descending block, a micro-puncher is mounted on the lower surface of the descending block, a first moving groove is formed in the side wall of the punching column, a polishing column is arranged right below the working plate, a groove for mounting the telescopic column is formed in the inner wall of the polishing column, a lifting block is connected in the groove in a sliding manner, the lower surface of the lifting block is fixedly connected with the telescopic rod of the telescopic column, a reserved groove for mounting a motor is formed in the center of the upper surface of the lifting block, a sand paper rod is coaxially connected with an output shaft of the motor, a second moving groove is formed in the side wall of the telescopic column, a sliding hole for sliding with a transmission plate is formed in the front side of the upper surface of the working plate, one end of the transmission plate is fixedly connected with the telescopic rod, and the other end of the transmission plate is fixedly connected with the telescopic rod.

As the further improvement of this technical scheme, work board front surface middle part fixedly connected with U template, the removal chamber has been seted up to U template inside, remove the intracavity and install the motor, the output shaft coaxial coupling of motor has first bevel gear, first bevel gear one side meshing has first bevel gear, first bevel gear rear surface coaxial coupling has the threaded rod, first bevel gear lower surface coaxial coupling has the transmission post, transmission post lower surface and removal chamber diapire rotate to be connected, transmission post lateral wall coaxial coupling has the second bevel gear, second bevel gear one side meshing has the second bevel gear, second bevel gear rear surface coaxial coupling has the screw post, threaded rod and screw post rear surface and removal chamber rear side wall rotate to be connected, punch post upper surface fixedly connected with fixed block, the screw hole with threaded rod threaded connection has been seted up to the fixed block front surface, polish post lower surface fixedly connected with movable block, the screw groove with screw post threaded connection has been seted up to the movable block front surface.

As the further improvement of this technical scheme, work board right surface rear side fixedly connected with loading board, the gliding storage tank of confession L template has been seted up to loading board right surface, the cylinder is installed to storage tank bottom wall, the telescopic link and the L template fixed connection of cylinder.

As a further improvement of the technical scheme, the upper surface of the working plate is fixedly connected with a wedge block, the left side of the wedge block is provided with a placement box, the right surface of the placement box is fixedly connected with the left surface of the working plate, and the upper surface of the placement box is provided with a placement cavity.

As a further improvement of the technical scheme, the upper surface of the working plate is provided with a clamping groove, the front side wall of the clamping groove is provided with a fan case, the rear side wall of the clamping groove is provided with an inserting groove, and a collecting block is connected in the inserting groove in a sliding manner.

As the further improvement of this technical scheme, sliding connection has a pair of grip block in the grip groove, be equipped with the guide post in the grip groove, lateral wall fixed connection about guide post both ends and the grip groove, grip block left surface has been seted up with the gliding sliding tray of guide post, the expansion groove with dwang threaded connection has all been seted up on the surface about the working plate, the one side that the dwang is close to each other and the one side fixed connection that the grip block kept away from each other.

As a further improvement of the technical scheme, the lower surface of the supporting leg is fixedly connected with a fixing plate, and the left side and the right side of the upper surface of the fixing plate are provided with hole slots for inserting fixing columns.

Compared with the prior art, the utility model has the beneficial effects that:

in this perforating device for aluminium alloy processing, through the post that punches that sets up and post and drive plate and sand paper stick of polishing, when punching to the aluminium alloy, miniature puncher descends along with the decline piece, post and sand paper stick of polishing simultaneously descend along with the effect of drive plate, after the completion of punching, miniature puncher descends along with the decline piece and rises, post and sand paper stick of polishing rise to downthehole wall of polishing, more unevenness burr has been avoided leaving around when punching to the aluminium alloy, the burr can seriously influence the service condition of aluminium alloy, the condition of need the staff to carry out burring to the hole on the aluminium alloy again, the machining efficiency of aluminium alloy has been improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure A of FIG. 1;

FIG. 3 is a diagram of a perforated column structure in accordance with the present utility model;

FIG. 4 is a block diagram of a U-shaped board according to the present utility model;

FIG. 5 is a block diagram of a clamping groove according to the present utility model;

fig. 6 is an enlarged schematic view of the B structure of fig. 5.

The meaning of each reference sign in the figure is:

1. a work plate; 10. support legs; 11. a fixing plate; 12. fixing the column; 13. punching a column; 14. a hydraulic cylinder; 15. a descent block; 16. a miniature puncher; 17. a first moving groove; 18. polishing the column; 19. a rising block; 190. a telescopic column; 2. a motor; 20. a sand paper rod; 21. a second moving groove; 22. a drive plate; 23. a U-shaped plate; 24. a moving chamber; 25. a motor; 26. a first bevel gear; 27. a first bevel gear; 28. a threaded rod; 29. a drive column; 3. a second bevel gear; 30. a second bevel gear; 31. a threaded column; 32. a fixed block; 33. a moving block; 34. a loading plate; 35. a cylinder; 36. an L-shaped plate; 37. wedge blocks; 38. placing a box; 39. a placement cavity; 4. a fan case; 40. a clamping groove; 41. a clamping block; 42. a guide post; 43. a rotating lever; 44. an insertion groove; 45. the blocks are collected.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the embodiment provides a punching device for processing aluminum profiles, which comprises a working plate 1, wherein four corners of the lower surface of the working plate 1 are fixedly connected with supporting legs 10, a punching column 13 is arranged right above the working plate 1, a hole groove for sliding a descending block 15 is formed in the punching column 13, a hydraulic cylinder 14 is arranged on the Kong Caoding wall, a telescopic rod of the hydraulic cylinder 14 is fixedly connected with the center of the upper surface of the descending block 15, a micro-puncher 16 is arranged on the lower surface of the descending block 15, a first movable groove 17 is formed in the side wall of the punching column 13, a polishing column 18 is arranged right below the working plate 1, a groove for installing a telescopic column 190 is formed in the inner wall of the polishing column 18, a lifting block 19 is connected in the groove in a sliding manner, a reserved groove for installing a motor 2 is formed in the center of the upper surface of the lifting block 19, a sand paper 20 is coaxially connected with an output shaft of the motor 2, a second movable groove 21 is formed in the side wall of the polishing column 18, a sliding hole 22 is formed in the front of the upper surface of the working plate 1, a transmission plate 22 is connected with the other end of the transmission plate 22, and the other end of the transmission plate 22 is connected with the telescopic rod 22, and the other end of the transmission rod is fixedly connected with the telescopic rod 22 of the transmission rod 190.

The working principle is as follows: when the aluminum profile is processed and punched, the aluminum profile is firstly placed on the working plate 1, then the hydraulic cylinder 14 starts to work, the telescopic rod of the hydraulic cylinder 14 descends together with the micro-punch 16, meanwhile, due to the transmission plate 22, the telescopic rod in the telescopic column 190 descends along with the descending block 19, at the moment, the aluminum profile is punched through the micro-punch 16, after punching is finished, the telescopic rod of the hydraulic cylinder 14 ascends, the descending block 15 and the micro-punch 16 move upwards, the transmission plate 22 drives the ascending block 19 to ascend, at the moment, the motor 2 starts to work, the output shaft of the motor 2 drives the sand paper rod 20 to rotate, holes formed in the aluminum profile are polished, more uneven burrs are left around when the aluminum profile is punched, the burrs seriously affect the service condition of the aluminum profile, and the situation that workers perform deburring on the holes in the aluminum profile again is required.

In order to make parallel holes on the aluminum profile without moving the aluminum profile when the aluminum profile is perforated, the middle part of the front surface of the working plate 1 is fixedly connected with a U-shaped plate 23, a moving cavity 24 is formed in the U-shaped plate 23, a motor 25 is arranged in the moving cavity 24, an output shaft of the motor 25 is coaxially connected with a first bevel gear 26, one side of the first bevel gear 26 is meshed with a first bevel gear 27, the rear surface of the first bevel gear 26 is coaxially connected with a threaded rod 28, the lower surface of the first bevel gear 27 is coaxially connected with a transmission column 29, the lower surface of the transmission column 29 is rotationally connected with the bottom wall of the moving cavity 24, the side wall of the transmission column 29 is coaxially connected with a second bevel gear 3, one side of the second bevel gear 3 is meshed with a second bevel gear 30, the rear surface of the second bevel gear 30 is coaxially connected with a threaded column 31, the back surface of threaded rod 28 and screw post 31 rotates with the back lateral wall of removing the chamber 24 and is connected, punch post 13 upper surface fixedly connected with fixed block 32, the screw hole with threaded rod 28 threaded connection has been seted up to fixed block 32 front surface, the fixed surface is connected with movable block 33 under the post 18 of polishing, the screw groove with screw post 31 threaded connection has been seted up to movable block 33 front surface, drive first bevel gear 26 and threaded rod 28 through motor 25 and rotate, make punch post 13 remove, simultaneously first bevel gear 27 drives drive post 29 and rotates, make with drive post 29 coaxial coupling's second bevel gear 3 rotate along with it, finally drive screw post 31 through second bevel gear 30 and rotate, can make post 18 and punch post 13 and carry out synchronous movement, the application scope of device has been widened.

Considering that the device needs the staff to place the aluminium alloy in the centre gripping groove 40 when punching to the aluminium alloy, so work bar 1 right surface rear side fixedly connected with loading board 34, the storage groove that supplies L template 36 to slide is seted up to loading board 34 right surface, cylinder 35 is installed to the tank bottom wall of accomodating, the telescopic link and the L template 36 fixed connection of cylinder 35 place the aluminium alloy on the L template 36 earlier, then rise on the work bar 1 with L template 36 through the telescopic link of cylinder 35, the staff is carrying out centre gripping punching to the aluminium alloy, the efficiency of device to aluminium alloy processing punching has been improved.

Although the device is to depositing the aluminium alloy in proper order and can delay time after accomplishing aluminium alloy punching, so work board 1 upper surface fixedly connected with wedge 37, wedge 37 left side is equipped with places case 38, places case 38 right surface and work board 1 left surface fixedly connected, places case 38 upper surface and has seted up and has placed chamber 39, places the aluminium alloy after accomplishing punching on wedge 37, and then the aluminium alloy landing is placed the intracavity 39 of placing in case 38, deposits the aluminium alloy in the unified at last, has improved the work efficiency of device.

In operation, the punching efficiency is delayed due to the fact that scraps are generated when the aluminum profile is punched, so that the clamping groove 40 is formed in the upper surface of the working plate 1, the fan case 4 is arranged on the front side wall of the clamping groove 40, the insertion groove 44 is formed in the rear side wall of the clamping groove 40, the collection block 45 is connected in a sliding mode in the insertion groove 44, and the scraps on the device are blown into the collection block 45 through the fan case 4 on the device in cooperation with the collection block 45, so that the punching efficiency of the device on the aluminum profile is accelerated.

In addition, when punching an aluminum profile, the device is required to clamp and fix the aluminum profile, so a pair of clamping blocks 41 are slidably connected in the clamping groove 40, guide posts 42 are arranged in the clamping groove 40, two ends of each guide post 42 are fixedly connected with the left side wall and the right side wall of the clamping groove 40, sliding grooves which slide with the guide posts 42 are formed in the left surface of each clamping block 41, telescopic grooves which are in threaded connection with rotating rods 43 are formed in the left and right surfaces of the working plate 1, one surfaces, close to each other, of the rotating rods 43 are fixedly connected with one surfaces, far away from each other, of the clamping blocks 41 are moved close to each other through the rotating rods 43, the aluminum profile is clamped, and stability of the aluminum profile in the punching process is guaranteed.

And when the device punches the aluminum profile, the vibration that the device takes place probably leads to the drill bit fracture that punches on the device, so supporting leg 10 lower surface fixedly connected with fixed plate 11, the hole groove that is used for inserting fixed column 12 is all offered to fixed plate 11 upper surface left and right sides, fixes device and ground through fixed column 12, has prolonged the life of device.

When the punching device for processing the aluminum profile in the embodiment is specifically used, the fixing plate 11 and the fixing column 12 under the supporting leg 10 are firstly used for fixing the device on the ground, the required aluminum profile is firstly placed on the L-shaped plate 36 before the aluminum profile is punched, then the air cylinder 35 works, the telescopic rod of the air cylinder 35 lifts the L-shaped plate 36 in the feeding plate 34 to move the aluminum profile to the upper surface of the working plate 1, then the aluminum profile required to be punched is placed in the clamping groove 40, the clamping block 41 is fixed by the rotating rod 43, the clamping block 41 is firstly rotated to enable the clamping block 41 to clamp and fix the aluminum profile by the moving rod 43 to enable the clamping block 41 to be close to each other, when the aluminum profile is processed and punched, the aluminum profile is firstly placed on the working plate 1, then the hydraulic cylinder 14 starts to work, the telescopic rod of the hydraulic cylinder 14 descends the descending block 15 together with the miniature punching machine 16, simultaneously, the telescopic rod in the telescopic column 190 of the telescopic rod descends along with the ascending block 19 due to the driving plate 22, at the moment, the micro-puncher 16 is used for punching the aluminum profile, after the punching is finished, the telescopic rod of the hydraulic cylinder 14 ascends to move the descending block 15 and the micro-puncher 16 upwards, meanwhile, the driving plate 22 drives the ascending block 19 to ascend, at the moment, the motor 2 starts to work, the output shaft of the motor 2 drives the sand paper rod 20 to rotate to grind the hole formed in the aluminum profile, during punching or grinding, the aluminum profile can generate scraps, at the moment, the power supply is switched on to start working of the fan box 4, wind blown by the fan box 4 blows the scraps into the collecting block 45 in the inserting groove 44 for temporary storage, after the punching work is finished, the collecting block 45 is extracted from the inserting groove 44 to treat the scraps in the collecting block 45, when the parallel holes are required to be formed in the aluminum profile, the motor 25 starts to work by switching on the power supply, the output shaft of the motor 25 drives the first bevel gear 26 and the threaded rod 28 to rotate, the first bevel gear 26 drives the first bevel gear 27 to rotate, the transmission column 29 rotates along with the first bevel gear 27, the transmission column 29 drives the second bevel gear 3 to rotate, the second bevel gear 30 meshed with one side of the second bevel gear 3 rotates along with the second bevel gear, the threaded column 31 rotates along with the rotation of the threaded rod 28, at the moment, the fixed block 32 on the upper surface of the descending block 15 moves along with the rotation of the threaded rod 28, the moving block 33 on the lower surface of the ascending block 19 moves along with the rotation of the threaded column 31 and the descending block 15 synchronously, the parallel holes are formed in the aluminum profile, after the aluminum profile is punched by the device, the aluminum profile is required to be stored, the aluminum profile is clamped and fixed, the aluminum profile after the punching is placed on the wedge block 37, then the aluminum profile slides into the placing cavity 39 in the placing box 38 along with the inclination of the wedge block 37, the aluminum profile is stored, more uneven surrounding the aluminum profile is left when the aluminum profile is punched, the rotation is carried out, the rotation of the moving along with the rotation of the threaded rod 28, the moving block 33 moves along with the rotation of the threaded rod along with the rotation of the threaded rod, the rotating rod, the rotating direction of the first bevel gear, the rotating body, the aluminum profile is required to be temporarily processed by the burr, and the aluminum profile, and the burrs after the aluminum profile, and the aluminum profile is required to be temporarily processed, and the burrs.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Perforating device is used in aluminium alloy processing, its characterized in that: the novel sand paper grinding machine comprises a working plate (1), supporting legs (10) are fixedly connected to four corners of the lower surface of the working plate (1), a punching column (13) is arranged right above the working plate (1), a hole groove for sliding a descending block (15) is formed in the punching column (13), a hydraulic cylinder (14) is mounted on the wall of the Kong Caoding, a telescopic rod of the hydraulic cylinder (14) is fixedly connected with the center of the upper surface of the descending block (15), a miniature punching machine (16) is mounted on the lower surface of the descending block (15), a first movable groove (17) is formed in the side wall of the punching column (13), a grinding column (18) is arranged right below the working plate (1), a groove for mounting a telescopic column (190) is formed in the inner wall of the grinding column (18), a lifting block (19) is connected with the telescopic rod of the telescopic column in a sliding mode, a groove for mounting a motor (2) is formed in the center of the upper surface of the lifting block (19), a transmission shaft (2) is coaxially connected with a second movable groove (22) and a first movable groove (20) is formed in the inner wall of the grinding column (18), a second movable groove (190) is formed in the inner wall of the grinding column, a transmission groove (2) is formed in the transmission groove, and the transmission groove is formed in the transmission groove is coaxially connected with the second movable groove (20), the other end of the transmission plate (22) is fixedly connected with a telescopic rod of the hydraulic cylinder (14), and the other end of the transmission plate (22) is slidably connected with the first moving groove (17).

2. The punching device for aluminum profile processing according to claim 1, characterized in that: the utility model discloses a polishing machine, including work board (1), U template (23) are fixedly connected with in front surface middle part, removal chamber (24) have been seted up to U template (23) inside, install motor (25) in removal chamber (24), the output shaft coaxial coupling of motor (25) has first bevel gear (26), first bevel gear (27) are meshed to first bevel gear (26) one side, first bevel gear (26) rear surface coaxial coupling has threaded rod (28), first bevel gear (27) lower surface coaxial coupling has transmission post (29), transmission post (29) lower surface and removal chamber (24) diapire rotation are connected, transmission post (29) lateral wall coaxial coupling has second bevel gear (3), second bevel gear (30) are meshed to second bevel gear (3) one side, second bevel gear (30) rear surface coaxial coupling has threaded post (31), threaded rod (28) and threaded post (31) rear surface and removal chamber (24) rear side wall rotation are connected, fixed surface connection has fixed block (32) on post (13), fixed surface connection has threaded hole (33) under fixed surface connection (32), the front surface of the moving block (33) is provided with a thread groove in threaded connection with the thread column (31).

3. The punching device for aluminum profile processing according to claim 1, characterized in that: the novel automatic feeding device is characterized in that a feeding plate (34) is fixedly connected to the rear side of the right surface of the working plate (1), a storage groove for an L-shaped plate (36) to slide is formed in the right surface of the feeding plate (34), an air cylinder (35) is mounted on the wall of the bottom of the storage groove, and a telescopic rod of the air cylinder (35) is fixedly connected with the L-shaped plate (36).

4. The punching device for aluminum profile processing according to claim 1, characterized in that: the utility model discloses a work board, including work board (1), work board (1) upper surface fixedly connected with wedge (37), wedge (37) left side is equipped with places case (38), place case (38) right surface and work board (1) left surface fixed connection, place case (38) upper surface and seted up and placed chamber (39).

5. The punching device for aluminum profile processing according to claim 1, characterized in that: the utility model discloses a fan case (4) is installed to working plate (1) upper surface, centre gripping groove (40) have been seted up, lateral wall installs fan case (4) before centre gripping groove (40), insertion groove (44) have been seted up to lateral wall behind centre gripping groove (40), sliding connection has collection piece (45) in insertion groove (44).

6. The perforating device for aluminum profile processing as recited in claim 5, wherein: the utility model discloses a pair of guide post, including clamping groove (40), sliding connection has a pair of grip block (41) in clamping groove (40), be equipped with guide post (42) in clamping groove (40), lateral wall fixed connection about guide post (42) both ends and clamping groove (40), sliding groove with guide post (42) gliding is seted up on grip block (41) left surface, telescopic slot with dwang (43) threaded connection has all been seted up on work board (1) left and right surfaces, the one side that dwang (43) are close to each other and one side fixed connection that clamping block (41) kept away from each other.

7. The punching device for aluminum profile processing according to claim 1, characterized in that: the lower surface of the supporting leg (10) is fixedly connected with a fixing plate (11), and the left side and the right side of the upper surface of the fixing plate (11) are respectively provided with a hole groove for inserting the fixing column (12).